The transport rate reaches a maximum when:

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(B) Facilitated diffusion is a process that requires specific membrane proteins to move molecules across the cell membrane.Because the number of these

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All of the protein transporters are being used.

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(B) Facilitated diffusion is a process that requires specific membrane proteins to move molecules across the cell membrane.Because the number of these protein transporters is limited,the transport rate increases with an increase in the concentration gradient up to a point.Once all the protein transporters are saturated (i.e.,all are occupied by substrate molecules),the transport rate reaches its maximum and cannot increase further,even if the concentration gradient is increased.This phenomenon is known as saturation kinetics.

Property	Simple Diffusion	Facilitated Transport	Active Transport
Transport Saturation	$P$	Yes	Yes
Uphill Transport	No	No	$Q$
Requirement of Energy	No	$R$	Yes

Similar Questions

What is active transport?

Uphill transport is a type of

Choose the correct option for $P, Q$ and $R$.
Property Simple Diffusion Facilitated Transport Active Transport
Transport Saturation $P$ Yes Yes
Uphill Transport No No $Q$
Requirement of Energy No $R$ Yes

$P, Q$ and $R$ respectively are:

Identify the type of transport shown in the given image.

In which movement, transport molecules are necessary but energy is not utilized?

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